I admit I skimmed it at first, because even for sighted people text might be too long. As I mentioned, trimming is a useful thing (and I don’t mean it snarky, even if it may seem that way).
However, I had given it a 2nd look and added an edit. Maybe the edit didn’t federate to Mastodon tho, so here it is:
Also, for uses other than vision impairment, I think text should be elsewhere than alt-text. Like just description text or image metadata. Alt-text is for when you can’t see the picture.
(Like on ye olde internet which you might have browsed with images disabled to speed up loading.)